Spring Cleaning for the Computer

My computer is only 2 years old, but has been moving very slow lately, and I don't think it's just because I am the last remaining person in the free world on dial up! Now that I've been on it more blogging, I've been wanting to get my nephew over to clean it out for me, he's my resident computer guru. I have no clue what to do, or how to clean it out. I know there's not a bunch of junk downloaded in it, because I am the only one that uses it and I don't download games or any of that. My virus software expired a few months after I got the computer, and I am not about to "extend my subscription" - as it keeps reminding me to do when I boot up- when I can get free Norton Antivirus. I am going to have to cook up a nice hot meal, invite the nephew over and have him check out this site so we can decide which antivirus software I need, and clean this puppy up!
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